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GMT/KLM 125 FUSE PANEL 

SETUP AND OPERATION MANUAL  

  

 PURPOSE AND APPLIcAbILITy - PAGE 1

Section 1:  Purpose and Applicability

The purpose of this document is to detail the installation and operation instructions for the GMT 125 and 

KLM 125 Fuse Panel.

1.1  Product Model

This document applies to the following models of the  

Comm/net Systems, Inc GMT 125 and KLM 125 Fuse Panel:

PART NUMBER

MODEL DESCRIPTION

OUTPUTS

MONITORING

COLOR

016-1846-10

-48VDC Dual Input KLM 125

Terminal Block

Standard

Black

016-1847-10

-48VDC Dual Input KLM 125

Terminal Block

Meter Module

Black

016-1848-10

-48VDC Dual Input KLM 125

Connectorized

Standard

Black

016-1849-10

-48VDC Dual Input KLM 125

Connectorized

Meter Module

Black

016-1870-10

-48VDC Dual Input GMT 125

Terminal Block

Standard

White

016-1871-10

-48VDC Dual Input GMT 125

Terminal Block

Standard

Black

016-1872-10

-48VDC Dual Input GMT 125

Connectorized

Standard

White

016-1873-10

-48VDC Dual Input GMT 125

Connectorized

Standard

Black

016-1874-10

-48VDC Dual Input GMT 125

Terminal Block

Meter Module

White

016-1875-10

-48VDC Dual Input GMT 125

Terminal Block

Meter Module

Black

016-1876-10

-48VDC Dual Input GMT 125

Connectorized

Meter Module

White

016-1877-10

-48VDC Dual Input GMT 125

Connectorized

Meter Module

Black

Section 2:  Theory of Operation

2.1  Introduction

2.1.1  GMT 125

The GMT 125 product family consists of a dual-input 10A/10B GMT fuse position, 1RU panel with optional 

connectorized outputs and meter module. GMT fuses are available for this panel in ratings starting with 1/64 

ampere up to 20 ampere rating.

2.1.2  KLM 125

The KLM 125 product family consists of a dual-input 4A/4B GMT and 4A/4B KLM fuse position, 1RU panel 

with optional connectorized outputs and meter module. 

The bus rating is 125 amperes max per bus. GMT fuses are available for this panel in ratings starting with 

1/64 ampere up to 15 ampere rating. KLM fuses are available for this panel in ratings starting with 1 ampere up 

to 30 ampere rating. 

2.2  Features

GMT 125

 

y

GMT fuse positions: 20; each available up to 20A max

KLM 125

 

y

GMT fuse positions: 8; each available up to 15A max

 

y

KLM fuse positions: 8; each available up to 30A max

All Models

 

y

Rack mounting: 19 in. or 23 in. via reversible rack mount ears

 

y

Mounting offset: Front-flush, mid-mount forward, mid-mount rearward

 

y

LED indicators 

(panels with standard bezel; Figure 1)

 

y

Advanced LCD display 

(panels with meter module; Figure 2)

 

y

Alarm Contacts: Form C dry contacts

 

y

Rear panel modular jack connections for alarm outputs

 

y

Fuse distribution output terminals: set screw terminals support 10-22 AWG wires terminated with a 

narrow ring or spade lug 

(0.25 in. max width)

 

y

Optional positive latching connectorized output connections

Figure 1.  Standard Bezel 

(GMT 125 Version Shown)

Figure 2.  Meter Module 

(GMT 125 Version Shown)

Summary of Contents for GMT 125 Fuse Panel

Page 1: ...SETUP AND OPERATION MANUAL F O R T E L E C O M B R O A D B A N D GMT KLM 125 Fuse Panel ...

Page 2: ...ces via a national footprint of regional branch offices Additional information can be found at www commnetsystems com 2018 Comm net Systems Inc All rights reserved Comm net Systems and the Comm net Systems logo are registered trademarks of Comm net Systems Inc in the United States and other countries All other trademarks service marks registered marks or registered service marks are the property o...

Page 3: ...SETUP AND OPERATION MANUAL F O R T E L E C O M B R O A D B A N D GMT KLM 125 Fuse Panel ...

Page 4: ...D RESULT IN INJURY OR DEATH DANGER INDICATES A HAZARDOUS SITUATION WHICH IF NOT AVOIDED WILL RESULT IN SERIOUS INJURY OR DEATH Product support If you have any questions concerning Comm net Systems products and services contact our support staff Our knowledgeable support team can provide product technical support and answer other questions regarding Comm net products and services In addition to con...

Page 5: ...s Only 4 4 3 Chassis Ground 4 4 4 Input Connections 5 4 5 Output Connections 6 4 5 1 Terminal Block Output Versions 6 4 5 2 Connectorized Output Versions 7 4 6 Installing Fuses 7 4 7 Alarm Installation 7 4 8 Installation Checklist 8 Section 5 Operation 9 5 1 Meter Module 9 5 1 1 Contrast Adjustment 9 5 1 2 Home Screen 9 5 1 3 Calibration and Settings 10 5 1 3 1 Reset Inventory 10 5 1 3 2 Bus Volta...

Page 6: ...GMT KLM 125 FUSE PANEL SETUP AND OPERATION MANUAL PAGE vi THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 7: ... GMT 125 The GMT 125 product family consists of a dual input 10A 10B GMT fuse position 1RU panel with optional connectorized outputs and meter module GMT fuses are available for this panel in ratings starting with 1 64 ampere up to 20 ampere rating 2 1 2 KLM 125 The KLM 125 product family consists of a dual input 4A 4B GMT and 4A 4B KLM fuse position 1RU panel with optional connectorized outputs a...

Page 8: ...GMT KLM 125 FUSE PANEL SETUP AND OPERATION MANUAL PAGE 2 Purpose and Applicability THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 9: ...unit rack assembly the operating ambient temperature of the rack environment may be greater than room ambient Therefore take care to install the equipment in an environment compatible with the maximum ambient temperature TMA specified in Section 5 4 1 2 Reduced Air Flow Installation of the equipment in a rack should be such that the amount of air flow required for safe operation of the equipment i...

Page 10: ...l to equipment rack by tightening the included 12 24 hardware into the mounting ears see Figure 4 4 2 1 Lacing Bar Connectorized Output Models Only Step 1 Attach the output cable lacing bar by tightening the two 10 32 pan head screws into the threaded holes located on the rear of the panel see Figure 5 4 3 Chassis Ground CAUTION DO NOT ENERGIZE THE PANEL BEFORE CHASSIS GROUND IS CONNECTED The chas...

Page 11: ...N PAGE 16 FOR COMPRESSION LUG SPECIFICATIONS TOOLING AND ORDERING INFORMATION Table 2 INPUT SPECIFICATIONS TERMINATION TYPE HOLE STUD SIZE CENTER TO CENTER MAX LUG WIDTH RECOMMENDED TORQUE VALUE Threaded Stud 1 4 in 5 8 in 5 8 in 50 in lbs Step 1 Remove the plastic input safety covers by pulling away from panel see Figure 7 Step 2 Install the return cables lugs to the return input studs located on...

Page 12: ...ft to correspond with the fuse holder on the front panel The bottom terminals in the terminal block are connected to the return bus bar for each input bus The top row of terminals are the fused outputs for each fuse holder as numbered Step 1 Connect the wires to the equipment loads to be fed by the panel fused outputs to these terminal block connections The return wire connects to the bottom termi...

Page 13: ...nnected load 4 7 Alarm Installation NOTICE WHEN DAISY CHAINING THE ALARM MUST BE MONITORED NORMALLY OPEN The GMT 125 and KLM 125 fuse panel has Form C dry alarm contacts for remote alarm monitoring If alarm monitoring is required 2 8p8c RJ 45 modular jacks are provided for alarm connections The 2 jacks support easy daisy chaining of panels The 8p8c modular jacks are located on the center rear of t...

Page 14: ... cables lug and return cables lugs securely bolted connected to rear of panel y y Heat shrink installed on cables y y Fuse fail alarm contacts wired to remote monitoring device if required y y Fused outputs wired with correct polarity crimp lugs wire lacing or cable tie routing to equipment loads y y Output connections secured y y Fuses sized as required for each load y y All safety covers attache...

Page 15: ...t The screen contrast can be adjusted by inserting a 00 screwdriver into the recessed contrast button view meter module illustration above for button locations 5 1 2 Home Screen Plus Minus Adjustment Select Contrast Bus Load A Bus Bus Load B Bus Voltage A Bus Voltage B Bus Home Screen Reset Inventory A Voltage Offset A Voltage Gain B Voltage Offset B Voltage Gain A Current Offset A Current Gain B ...

Page 16: ... Offset A and B bus voltage offset can be adjusted by pressing the or buttons The measured bus voltage is shown in hundredths of volts along with the applied offset Press Sel to advance to the next setting 5 1 3 3 Bus Voltage Gain A and B bus voltage gain can be adjusted by pressing the or buttons The measured voltage is shown in hundredths of volts along with the applied gain Press Sel to advance...

Page 17: ...urrent 125A Max 125A Max Maximum Input Interruption Device 150A 150A Interrupt Rating 450A 450A Maximum Fuse Size 20A GMT 30A KLM 15A GMT Maximum per Circuit Current 20A 30A KLM 15A GMT Maximum Continuous Load on 15 20A GMT Fuses 70 Fuse Rating 70 Fuse Rating Maximum Continuous Load on 15A GMT Fuses 80 Fuse Rating 80 Fuse Rating Max Operating Altitude 2000 m 2000 m Max Ambient Temperature 45º C 55...

Page 18: ...ANEL SETUP AND OPERATION MANUAL PAGE 12 Figure 16 GMT 125 Front View Advanced Display Version Appendix A Mechanical Drawings FRONT VIEW 19 000 17 000 1 720 Figure 17 GMT 125 Front View Standard Version Figure 18 KLM 125 Front View Advanced Display Version Figure 19 KLM 125 Front View Standard Version ...

Page 19: ...E PANEL SETUP AND OPERATION MANUAL PAGE 13 REAR VIEW ALARM PORTS FORM C DRY CONTACTS OUTPUT TERMINATION BLOCK TOP HOT BOTTOM RETURN Figure 20 Rear View for All Models Terminal Block Outputs OUTPUT CONNECTIONS ALARM PORTS FORM C DRY CONTACTS Figure 21 Rear View for All Models Connectorized Outputs ...

Page 20: ...SE PANEL SETUP AND OPERATION MANUAL PAGE 14 Product Specifications GMT KLM 125 FUSE PANEL SETUP AND OPERATION MANUAL PAGE 14 Figure 22 Top View Terminal Block Outputs Figure 23 Top View Connectorized Outputs TOP VIEW ...

Page 21: ...GMT KLM 125 FUSE PANEL SETUP AND OPERATION MANUAL Product Specifications PAGE 15 GMT KLM 125 FUSE PANEL SETUP AND OPERATION MANUAL PAGE 15 SIDE VIEW Figure 24 Side View KLM Fuses Shown ...

Page 22: ...ER CRIMP TOOL REQUIRED 16 14 AWG Ring Terminal 538 068 10 TE Connectivity 34158 TE Connectivity 58433 3 with Die Assembly 58423 1 10 12 AWG Ring Terminal 538 280 10 TE Connectivity 329697 TE Connectivity 169400 with Die Assembly 169404 16 14 AWG Spade Terminal 538 038 10 TE Connectivity 52955 TE Connectivity 58433 3 with Die Assembly 58423 1 12 10 AWG Spade Terminal 538 119 10 TE Connectivity 5296...

Page 23: ...60VDC white brown flag 460 009 10 GMT Fuse 5A 60VDC green flag 460 012 10 GMT Fuse 7 5A 60VDC black white flag 460 010 10 GMT Fuse 10A 60VDC red white flag 460 011 10 GMT Fuse 15A 60VDC red blue flag 460 041 10 GMT Fuse 20A 60VDC green white flag Not applicable for KLM 125 Models Table 12 SUPPORTED KLM FUSES PART NUMBER DESCRIPTION 460 089 10 KLM Fuse 1A 600VDC 460 088 10 KLM Fuse 2A 600VDC 460 08...

Page 24: ... 433 10 Red Black 745 290 10 Blue Black 745 424 10 Red Red Tracer 745 438 10 10 12 Blue Blue Tracer 745 434 10 Red Black 745 421 10 Blue Black 745 425 10 Red Red Tracer 745 298 10 7 Blue Blue Tracer 745 299 10 Red Black 745 293 10 Blue Black 745 294 10 Red Red Tracer 745 197 10 12 12 Blue Blue Tracer 745 198 10 Red Black 745 436 10 Blue Black 745 427 10 Red Red Tracer 745 432 10 7 Blue Blue Tracer...

Page 25: ...THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 26: ...rchase Comm net Systems solutions contact your Comm net Systems representative at 800 274 0544 or e mail sales commnetsystems com 2018 Comm net Systems Inc All rights reserved Comm net Systems and the Comm net Systems logo are registered trademarks of Comm net Systems Inc in the United States and other countries All other trademarks service marks registered marks or registered service marks are th...

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